2009 Mazda CX-9 problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
59 owner complaints analyzed
6 distinct recall campaigns
85,000 mi median reported failure mileage
Scope: 2009 model year. Data snapshot: . 39 complaints include usable failure mileage.
Most common problems
Service Brakes is the most frequently named component, appearing in 17 of 59 complaints (28.8%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Braking behavior | 19 | 32.2% |
| Transmission and shifting | 3 | 5.1% |
| Engine operation | 2 | 3.4% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Service Brakes | 17 |
| Air Bags | 16 |
| Power Train | 6 |
| Suspension | 6 |
| Engine | 4 |
| Exterior Lighting | 2 |
| Seat Belts | 2 |
| Steering | 2 |
Service Brakes: 17; Air Bags: 16; Power Train: 6; Suspension: 6; Engine: 4; Exterior Lighting: 2; Seat Belts: 2; Steering: 2
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 2 |
| 25,000 to 49,999 | 8 |
| 50,000 to 74,999 | 8 |
| 75,000 to 99,999 | 3 |
| 100,000 to 149,999 | 16 |
| 150,000 and above | 2 |
Under 25,000: 2; 25,000 to 49,999: 8; 50,000 to 74,999: 8; 75,000 to 99,999: 3; 100,000 to 149,999: 16; 150,000 and above: 2
100,000 to 149,999 miles has the most reports with usable mileage (16). 20 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2010 | 2 |
| 2012 | 2 |
| 2013 | 4 |
| 2014 | 3 |
| 2015 | 5 |
| 2016 | 13 |
| 2017 | 14 |
| 2018 | 3 |
| 2019 | 3 |
| 2020 | 5 |
| 2021 | 2 |
| 2022 | 1 |
| 2024 | 1 |
| 2026 | 1 |
2010: 2; 2012: 2; 2013: 4; 2014: 3; 2015: 5; 2016: 13; 2017: 14; 2018: 3; 2019: 3; 2020: 5; 2021: 2; 2022: 1; 2024: 1; 2026: 1
Pattern summary
Service Brakes leads the component reports. Braking behavior appears in 19 complaint narratives. Transmission and shifting appears in 3 complaint narratives. Engine operation appears in 2 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 10512950 · 2013-05-21 (May 21, 2013)
2009 MAZDA CX-9 - ON 5/19/2013 THE BRAKES WERE FINE. THE MORNING OF THE 20TH MY WIFE RETURNED HOME FROM WORK, AND SAID SHE HEARD A HISSING NOISE FROM THE BRAKES. I DROVE THE CAR TO WORK LATER THAT DAY AND NOTICED THE HISSING SOUND. I ALSO NOTICED THAT THE BRAKE PEDAL FELT NORMAL AT FIRST THEN BEGAN TO GET HARD AND THE CAR COULD BARLEY STOP. *TR
Owner-reported narrative. 43,000 miles reported. Look up ODI 10512950 at NHTSA ↗
Owner report 10525358 · 2013-07-17 (July 17, 2013)
TL* THE CONTACT OWNS A 2009 MAZDA CX-9. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 40 MPH, EXCESSIVE FORCE HAD TO BE APPLIED TO THE BRAKE PEDAL IN ORDER TO BRING THE VEHICLE TO STOP. THE VEHICLE WAS TAKEN TO A PRIVATE MECHANIC WHERE THE CONTACT WAS INFORMED THAT THERE WAS FLUID LEAKING FROM THE MASTER CYLINDER TO THE POWER BOOSTER. THE CONTACT WAS ALSO INFORMED THAT THE POWER BOOSTER NEEDED TO BE REPLACED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE AND CURRENT MILEAGE WAS 38,…
Owner-reported narrative. 38,000 miles reported. Look up ODI 10525358 at NHTSA ↗
Owner report 10319475 · 2010-03-13 (March 13, 2010)
THE TACHOMETER OF THE CAR STICKS IN HIGH REVS (1500-2500),ENGINE ON, CAR IN NEUTRAL, FOOT OFF THE GAS PEDAL, IF THE CAR IS MOVING OVER 20-25MPH (EITHER BY FREE FALLING A HILL OR BEING PULLED) THE TACHOMETER VARIES THE RPM READING TO MATCH SPEED JUST AS IF THE CAR WOULD BE IN 'D' POSITION. I THINK THE ECU HAS A GLITCH OF SOME SORT THAT IGNORES THE GAS PEDAL AND THE SHIFT POSITION IF THE CAR IS MOVING. TAKEN TO THE DEALERSHIP AND THEY SAID CAR IS WORKING AS DESIGNED, THAT THE CAR WILL KEEP RPMS TO MATCH SPEED IN TO AVOID A ENGINE SLOWDOWN OR …
Owner-reported narrative. 24,500 miles reported. Look up ODI 10319475 at NHTSA ↗
Owner report 10918582 · 2016-10-24 (October 24, 2016)
THERE WAS FIRST A WHINING SOUND FROM THE TRANSMISSION ESPECIALLY DURING COASTING. IT PROGRESSIVELY GOT WORSE MAKING A METALLIC CLUNKING SOUND. DEALER SAYS IT IS A BAD TRANSFER CASE (PTU) WHICH IS NOT COVERED BY SSP92. OTHERWISE THIS REPAIR WOULD HAVE BEEN COMPLETED BY MAZDA. REPAIR ESTIMATE IS $1315.
Owner-reported narrative. 86,700 miles reported. Look up ODI 10918582 at NHTSA ↗
Owner report 10588295 · 2014-05-14 (May 14, 2014)
I WAS IN THE PARKING LOT LOOKING FOR A SPACE WHEN THE ENGINE SUDDENLY SHUT OFF! RADIO WAS STILL ON. I HAD ABSOLUTELY NO CONTROL ON THE VEHICLE EXCEPT FOR "GLIDING" TO THE PARKING SPOT AHEAD OF ME AND BRAKING. ONCE PARKED I TURNED THE IGNITION KEY ON OFF, TOOK IT OUT, RE-INSERTED THE KEY AND RESTARTED THE CAR. THE CAR RESPONDED NORMALLY. AS A TEST, I BACKED OUT OF THE STALL AND PARKED IN ANOTHER ONE WITHOUT ANY PROBLEM. 2 HOURS LATER THE CAR STARTED WITHOUT ANY PROBLEM. *TR
Owner-reported narrative. 73,687 miles reported. Look up ODI 10588295 at NHTSA ↗
Owner report 10598132 · 2014-06-13 (June 13, 2014)
I PURCHASED A USED 2009 MAZDA CX-7 IN JUNE 2012. IN MAY 2014 MY CHECK ENGINE LIGHT CAME ON. I TOOK THE CAR TO THE NEAREST AUTO SERVICE STATION WHICH WAS NOT A MAZDA DEALERSHIP AND THE ENGINE STOPPED WHEN THEY TRIED TO TURN IT ON. I HAD THE CAR TOWED TO A MAZDA DEALERSHIP AND HAD A QUOTE OF $8,000 BECAUSE I WAS TOLD I NEEDED A NEW ENGINE. I PURCHASED A 5 YEAR/100,000MILES WARRANTY WITH AMERICAN GUARDIAN IN 2012 WHEN I PURCHASED THE CAR. I FILED A CLAIM WITH AMERICAN GUARDIAN AND WAS TOLD THAT THE ENGINE FAIL FROM LACK OF OIL. I PRESENTED ALL MY …
Owner-reported narrative. 51,000 miles reported. Look up ODI 10598132 at NHTSA ↗